Demon God

Read manhwa Demon God /  Supreme Demon of Hyungsan/ The Supreme Demon Of Mount Hyungsan / 마신
One hundred children trapped in Mount Hyungsan.
Only one, ‘Dan Hyung-woo’, came out alive.
He survived the hell created by the Heavenly Schemer, and in return, gained power worthy of being called a Demon God, but the world is unfamiliar, and he does not understand its rules.
So he became an escort for the Henan Escort Agency.